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Plowman, 356 - Total peripheral resistance (TPR)

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Plowman, 356 - Total peripheral resistance (TPR)

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Questions and Answers

What is the primary cause of vasodilation in active muscles during exercise?

Increased metabolism

Increased blood flow

Local chemical factors (correct)

Decreased resistance

What is the implication of decreased resistance due to vasodilation in active muscles during exercise?

Decreased blood flow

Decreased oxygen availability

Increased blood flow (correct)

Increased oxygen availability

How does decreased resistance due to vasodilation in active muscles during exercise affect mean arterial pressure (MAP)?

Has no effect on it

Decreases it (correct)

Increases it

Causes it to fluctuate

What determines the increase in MAP during dynamic aerobic exercise?

Relative changes in cardiac output and TPR Signup and view all the answers

What happens to myocardial oxygen consumption during dynamic aerobic exercise?

It increases Signup and view all the answers

What is the rate-pressure product (RPP)?

The product of heart rate and systolic blood pressure Signup and view all the answers

What does an increase in RPP during exercise reflect?

Increased myocardial oxygen demand Signup and view all the answers

What is the effect of dynamic aerobic exercise on total peripheral resistance (TPR)?

It decreases Signup and view all the answers

What are the local chemical factors that cause vasodilation in active muscles during exercise?

Lactate and K+ Signup and view all the answers

What is the effect of decreased resistance due to vasodilation in active muscles during exercise on mean arterial pressure (MAP)?

Decreases it dramatically Signup and view all the answers

What is the implication of increased myocardial oxygen consumption during dynamic aerobic exercise?

Increased myocardial oxygen demand Signup and view all the answers

What is the rate-pressure product (RPP) a measure of during exercise?

Myocardial oxygen demand Signup and view all the answers